#include <iostream>
#include <unistd.h>
#include <stdlib.h>
#include <seccomp.h>
#include <sys/syscall.h>
using namespace std;
int main(int argc, char** argv) {
    scmp_filter_ctx ctx = seccomp_init(SCMP_ACT_ALLOW);
    seccomp_rule_add(ctx, SCMP_ACT_KILL, SYS_open, 0);
    seccomp_load(ctx);
    seccomp_release(ctx);
    freopen("user.out", "r", stdin);
    int a,b;
    while (cin>>a>>b) {
        cout<<a+b<<endl;
    }
    return 0;
}
